OPERATOR IN TRAINING EXAM 2025/26
QUESTIONS WITH COMPLETE SOLUTIONS.
1 of 166
Term
A lantern ring is a...
Give this one a try later!
spacer ring in a pump packing centering ring in a motor to align
gland to improve seal water components
distribution
support ring in a valve to stabilize sealing ring in a pipe joint to
flow prevent leaks
, Don't know?
2 of 166
Term
The discharge pressure gauge on a pump reads 150kPa. This is
equivalent to how many meters of head?
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15.3 5.8
10.2 20.5
Don't know?
3 of 166
Term
What should the turbidity be for treated water from a properly
operated filter plant?
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3.0 0.5
, 1.0 5.0
Don't know?
4 of 166
Term
The density of chlorine gas is about_____times that of air.
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3¼ 4½
1½ 2½
Don't know?
5 of 166
Term
The presence of coliform bacteria in amounts greater than allowed
by standards indicates:
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That water is leaking out
That water is safe to drink the pipe
, That water is excessively chlorinated That water is being over-treated
Don't know?
6 of 166
Term
If water in the system is murky with a large amount of fine suspended
matter, the water is said to have a high amount of
Give this one a try later!
salinity turbidity
acidity polarity
Don't know?
7 of 166
Term
What is the minimum number of monthly distribution system samples
that must be obtained in a community with a population of 65,000
people?
Give this one a try later!
QUESTIONS WITH COMPLETE SOLUTIONS.
1 of 166
Term
A lantern ring is a...
Give this one a try later!
spacer ring in a pump packing centering ring in a motor to align
gland to improve seal water components
distribution
support ring in a valve to stabilize sealing ring in a pipe joint to
flow prevent leaks
, Don't know?
2 of 166
Term
The discharge pressure gauge on a pump reads 150kPa. This is
equivalent to how many meters of head?
Give this one a try later!
15.3 5.8
10.2 20.5
Don't know?
3 of 166
Term
What should the turbidity be for treated water from a properly
operated filter plant?
Give this one a try later!
3.0 0.5
, 1.0 5.0
Don't know?
4 of 166
Term
The density of chlorine gas is about_____times that of air.
Give this one a try later!
3¼ 4½
1½ 2½
Don't know?
5 of 166
Term
The presence of coliform bacteria in amounts greater than allowed
by standards indicates:
Give this one a try later!
That water is leaking out
That water is safe to drink the pipe
, That water is excessively chlorinated That water is being over-treated
Don't know?
6 of 166
Term
If water in the system is murky with a large amount of fine suspended
matter, the water is said to have a high amount of
Give this one a try later!
salinity turbidity
acidity polarity
Don't know?
7 of 166
Term
What is the minimum number of monthly distribution system samples
that must be obtained in a community with a population of 65,000
people?
Give this one a try later!
